breastplate breastpin • breastplow · · · Info · Definitions · Synonyms · Characters · · breastplate · · Text Latin · · Script 11 · · Length Definitions · · · (noun) armor plate that protects the chest; the front part of a cuirass. Synonyms: aegis, egis. · · Noun Definition 1 Synonyms · · · aegis · · Synonym 1 egis · · Synonym 2 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 l latin small letter l U+006C p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074